Please note that switching to x86_64-v2 does *not* give you access to
AVX2 or even AVX. It stops at SSE4.2 with POPCNT.
AVX2 means x86_64-v3, which both excludes a lot more hardware and allows
(in some cases) much more significant performance gains.
On 6/19/24 3:29 AM, Vitaly Zaitsev via devel wrote:
On 19/06/2024 09:13, Daniel P. Berrangé wrote:
If Fedora cares
about optimal performance it should just declare we're going to stop
being held back by compat with ancient hardware and use -v2 baseline
for everything, but obviously that's been rejected previously.
Maybe it's a good time for the Fedora 41 System-Wide change proposal?
Switching to AVX2 will give significant performance boost for many
applications.
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